1 show that a function f: RR defined by f(x) =47-5/3 is a one to one correspondence
2. Show that whether each of the following function is odd, even or neither of both;
a . f(x)= 6x² + 30
b. f(x)=1/4
f(x) = -20x2 - 15x+5
3. Given f(x) = 6x2 + 2x - 3 and gof (x)=x2 - 4x - 2, then find g(x), g(10) and fog(10)

The mark up is $16.8

The adult price is $44.8

Step-by-step explanation:

* Lets explain how to solve the problem

- The mark up is the the amount of increasing in percentage

- If the original amount is known and the percentage markup is

 known, then the final amount is the original amount plus the

 amount of markup

* Lets solve the problem

- A junior one day admission to an amusement park is $28

- This price is increased by 60% for adults

- They ask for the markup and the adult price

∵ The mark up is the amount of increasing

∵ The junior admission is $28

∵ The adult admission is 60% more the junior admission

∴ The mark up is 60% of the junior admission

∵ 60% = 60/100 = 0.6

∴ The mark up = 0.6 × 28 = 16.8

∴ The mark up is $16.8

∵ The adult price = junior price + mark up amount

∵ The junior price = $28

∵ The mark up = $16.8

∴ The adult price = 28 + 16.8 = 44.8

∴ The adult price is $44.8